Calc Hscore

{
  "citation": {
    "authors": "Fardet L, Galicier L, Lambotte O, Marzac C, Aumont C, Chahwan D, Coppo P, Hejblum G",
    "doi": "10.1002/art.38690",
    "id": "fardet-2014",
    "pmid": "24782338",
    "source": "Arthritis Rheumatol. 2014;66(9):2613-2620",
    "title": "Development and validation of the HScore, a score for the diagnosis of reactive hemophagocytic syndrome"
  },
  "components": [
    {
      "factor": "immunosuppression",
      "points": 0,
      "present": false
    },
    {
      "factor": "temperature_band",
      "points": 0,
      "present": false,
      "value": "lt_38_4"
    },
    {
      "factor": "organomegaly",
      "points": 0,
      "present": false,
      "value": "none"
    },
    {
      "factor": "cytopenia_lineages",
      "points": 0,
      "present": false,
      "value": 1
    },
    {
      "factor": "ferritin_band",
      "points": 0,
      "present": false,
      "value": "lt_2000"
    },
    {
      "factor": "triglyceride_band",
      "points": 0,
      "present": false,
      "value": "lt_1_5"
    },
    {
      "factor": "fibrinogen_band",
      "points": 0,
      "present": false,
      "value": "gt_2_5"
    },
    {
      "factor": "sgot_band",
      "points": 0,
      "present": false,
      "value": "lt_30"
    },
    {
      "factor": "marrow_hemophagocytosis",
      "points": 0,
      "present": false
    }
  ],
  "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "formula": "hscore",
  "formula_expression": "HScore = immunosuppression (true 18) + temperature_band (lt_38_4 0, 38_4_to_39_4 33, gt_39_4 49) + organomegaly (none 0, hepato_or_spleno 23, hepato_and_spleno 38) + cytopenia_lineages (1 → 0, 2 → 24, 3 → 34) + ferritin_band (lt_2000 0, 2000_to_6000 35, gt_6000 50) + triglyceride_band (lt_1_5 0, 1_5_to_4 44, gt_4 64) + fibrinogen_band (gt_2_5 0, le_2_5 30) + sgot_band (lt_30 0, ge_30 19) + marrow_hemophagocytosis (true 35); Fardet 2014 Table 4; max 337; score_ge_169 iff total >= 169 (Table 5 best cutoff)",
  "max_score": 337,
  "score": 0,
  "score_ge_169": false
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.magentlab.com/api/calc/hscore?cytopenia_lineages=1&ferritin_band=lt_2000&fibrinogen_band=gt_2_5&immunosuppression=false&marrow_hemophagocytosis=false&organomegaly=none&sgot_band=lt_30&temperature_band=lt_38_4&triglyceride_band=lt_1_5'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.magentlab.com/api/calc/hscore?cytopenia_lineages=1&ferritin_band=lt_2000&fibrinogen_band=gt_2_5&immunosuppression=false&marrow_hemophagocytosis=false&organomegaly=none&sgot_band=lt_30&temperature_band=lt_38_4&triglyceride_band=lt_1_5' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fhscore
const res = await pay("https://api.magentlab.com/api/calc/hscore?cytopenia_lineages=1&ferritin_band=lt_2000&fibrinogen_band=gt_2_5&immunosuppression=false&marrow_hemophagocytosis=false&organomegaly=none&sgot_band=lt_30&temperature_band=lt_38_4&triglyceride_band=lt_1_5");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.magentlab.com/api/calc/hscore?cytopenia_lineages=1&ferritin_band=lt_2000&fibrinogen_band=gt_2_5&immunosuppression=false&marrow_hemophagocytosis=false&organomegaly=none&sgot_band=lt_30&temperature_band=lt_38_4&triglyceride_band=lt_1_5")
    print(res.status_code, res.text)